MESON Chess Problem Database

Problem Display
PID: 7317 (1BQ5/1p2N1pK/1p1N4/1B1P3R/3k2p1/2RP2n1/q2Pb3/3n4 w - - 0 1)

Mirkailo, Dragoljub

4th Comm., Probleemblad, 1999

1BQ5/1p2N1pK/1p1N4/1B1P3R/3k2p1/2RP2n1/q2Pb3/3n4

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qb1
      • 2.Qc4#
    • 1...Qc4
      • 2.Qxc4#
    • 1...Qxd5
      • 2.Rxd5#
    • 1...Qa1
      • 2.Qc4#
    • 1...Qb2
      • 2.Qc4#
    • 1...Qc2
      • 2.Qc4#
    • 1...Qa3
      • 2.Qc4#
    • 1...Qa5
      • 2.Qc4#
    • 1...Qa6
      • 2.Qc4#
    • 1...Qa7
      • 2.Qc4#
    • 1...Qa8
      • 2.Qc4#
    • 1...Bxd3+
      • 2.Rxd3#
    • 1...Sxc3
      • 2.Qxc3#
    • 1...Sf1
      • 2.Sdf5#
    • 1...Sh1
      • 2.Sdf5#
    • 1...Se4
      • 2.Sdf5#
    • 1...Sf5
      • 2.Sdxf5#
    • 1...Sxh5
      • 2.Sdf5#
    • 1...g5
      • 2.Qh8#
    • 1...g6
      • 2.Qh8#
  • Tries
    • 1.Rc4+?
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Kxd3!
    • 1.Qxg4+?
      • 1...Se4
        • 2.Sdf5#
        • 2.Qxe4#
      • 1...Bxg4!
  • Keys
    • 1.Qf5!
      • threat
        • 2.Qe5#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Bxd3
        • 2.Qxd3#
      • 1...Sxc3
        • 2.Qf2#
      • 1...Sxf5
        • 2.Sdxf5#
      • 1...Sxh5
        • 2.Qe4#
      • 1...Qc4
        • 2.Rxc4#
      • 1...g5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 0
    • REMOVED MATES = 13
  • Sets
    • Q(b);N_GUARD,P_PINP(C)::QAR1(K)
    • Q(b);N_GUARD::QAR1(K),XQ(b)
    • Q(b);OGATE,XP(E)::R1(F),XQ(b)
    • Q(b);N_GUARD::QAR1(K)
    • B(c);CHECK,OGATE,XP(C)::R1(B),XB(c)
    • S(a);OGATE,XR(B)::QAB1(K),XS(a)
    • S(d);N_GUARD::S(G)
    • S(d);N_GUARD::S(G),XS(d)
    • S(d);N_GUARD,XR(F)::S(G)
    • P(i);OGATEB::QAB(K)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • Q(b);OGATE,XR(B)::QAR1(K),XQ(b)
      • Refutation
        • K(e);P-FLIGHT,XP(C)
    • Try
      • Q(K);CHECK,XP(f)
      • Refutation
        • B(c);XQ(K)
  • Actual
    • Q(K);
    • Threat
      • QAB1(K)
    • Vars
      • Q(b);OGATE,XP(E)::QAR1(K),XQ(b)
      • B(c);OGATE,P_PINQ(K),XP(C)::QAR1(K),XB(c)
      • S(a);N_GUARD,XR(B)::QAB(K)
      • S(d);XQ(K)::S(G),XS(d)
      • S(d);N_GUARD,XR(F)::QAR1(K)
      • Q(b);N_GUARD::R1(B),XQ(b)
      • P(i);N_GUARD::QAB(K)
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